METHOD AND APPARATUS FOR REMOVING SHADOW FROM AERIAL OR SATELLITE PHOTOGRAPH
First Claim
1. A method for removing a shadow from an aerial or satellite photograph, the method being performed by a shadow removal apparatus, which includes a photographing information collecting unit, a building information extracting unit, a shadow area estimating unit, an image restoration unit, and an image composition unit, the method comprising:
- collecting aerial or satellite photographs, by the photographing information collecting unit;
extracting buildings at each of the collected aerial or satellite photographs, by the building information extracting unit;
estimating a shadow area cast by the extracted buildings, by the shadow area estimating unit;
restoring a shaded image in the aerial or satellite photograph, which corresponds to the estimated shadow area, by the image restoration unit; and
composing the restored image and a residual image of the aerial or satellite photograph except the shadow area, by the image composition unit.
2 Assignments
0 Petitions
Accused Products
Abstract
A method for removing a shadow from an aerial or satellite photograph, includes collecting aerial or satellite photographs, by the photographing information collecting unit; extracting buildings at each of the collected aerial or satellite photographs, by the building information extracting unit; and estimating a shadow area cast by the extracted buildings, by the shadow area estimating unit. Further, the method includes restoring a shaded image in the aerial or satellite photograph, which corresponds to the estimated shadow area, by the image restoration unit; and composing the restored image and a residual image of the aerial or satellite photograph except the shadow area, by the image composition unit.
-
Citations
16 Claims
-
1. A method for removing a shadow from an aerial or satellite photograph, the method being performed by a shadow removal apparatus, which includes a photographing information collecting unit, a building information extracting unit, a shadow area estimating unit, an image restoration unit, and an image composition unit, the method comprising:
-
collecting aerial or satellite photographs, by the photographing information collecting unit; extracting buildings at each of the collected aerial or satellite photographs, by the building information extracting unit; estimating a shadow area cast by the extracted buildings, by the shadow area estimating unit; restoring a shaded image in the aerial or satellite photograph, which corresponds to the estimated shadow area, by the image restoration unit; and composing the restored image and a residual image of the aerial or satellite photograph except the shadow area, by the image composition unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An apparatus for removing a shadow from an aerial or satellite photograph, the apparatus comprising:
-
a photographing information collecting unit configured to collect aerial or satellite photographs; a building information extracting unit configured to extract buildings in each of the collected aerial or satellite photographs; a shadow area estimating unit configured to estimate a shaded area cast by the extracted buildings; an image restoration unit configured to restore a shaded image in the aerial or satellite photograph, which corresponds to the estimated shadow area; and an image composition unit configured to compose the restored image and a residual image of the aerial or satellite photograph except the shadow area. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
Specification